On my OnePlus 3 with Android 7 (OxygenOS 4.0.2), if I'm solving a puzzle and tilt my phone sideways, WWC will exit to the list of downloaded puzzles without saving my progress. When I return to the puzzle, any recent entries are gone.
Thanks for the report. Yeah, there's a latent bug that recently manifested in newer Android versions when the screen rotates. I'll fix this in the next update.
On my OnePlus 3 with Android 7 (OxygenOS 4.0.2), if I'm solving a puzzle and tilt my phone sideways, WWC will exit to the list of downloaded puzzles without saving my progress. When I return to the puzzle, any recent entries are gone.